<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
  <style>
    ul{
      /*控制列表前面的符号*/
      /*list-style-type: none;*/
      /*列表符号的位置*/
      list-style-position: inside;
      /*更改序号图标*/
      list-style-image: url("../../image/video.gif");
    }
    li{
      /* background: orange; */
    }
  </style>
</head>
<body>
<ul>
  <li>张三</li>
  <li>李四</li>
  <li>王五</li>
</ul>
</body>
</html>